/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.commons.concurrent.threadpool;

import org.apache.iotdb.commons.concurrent.IoTThreadFactory;
import org.apache.iotdb.commons.conf.IoTDBConstant;
import org.apache.iotdb.commons.service.JMXService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;
import java.util.concurrent.*;

public class WrappedThreadPoolExecutor extends ThreadPoolExecutor
        implements WrappedThreadPoolExecutorMBean {
    private static final Logger logger = LoggerFactory.getLogger(WrappedThreadPoolExecutor.class);
    private final String mbeanName;

    public WrappedThreadPoolExecutor(
            int corePoolSize,
            int maximumPoolSize,
            long keepAliveTime,
            TimeUnit unit,
            BlockingQueue<Runnable> workQueue,
            ThreadFactory threadFactory,
            String mbeanName) {
        super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);
        this.mbeanName =
                String.format(
                        "%s:%s=%s", IoTDBConstant.IOTDB_THREADPOOL_PACKAGE, IoTDBConstant.JMX_TYPE, mbeanName);
        JMXService.registerMBean(this, this.mbeanName);
    }

    public WrappedThreadPoolExecutor(
            int corePoolSize,
            int maximumPoolSize,
            long keepAliveTime,
            TimeUnit unit,
            BlockingQueue<Runnable> workQueue,
            IoTThreadFactory ioTThreadFactory,
            String mbeanName) {
        super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, ioTThreadFactory);
        this.mbeanName =
                String.format(
                        "%s:%s=%s", IoTDBConstant.IOTDB_THREADPOOL_PACKAGE, IoTDBConstant.JMX_TYPE, mbeanName);
        JMXService.registerMBean(this, this.mbeanName);
    }

    @Override
    public void shutdown() {
        super.shutdown();
        JMXService.deregisterMBean(mbeanName);
    }

    @Override
    public List<Runnable> shutdownNow() {
        JMXService.deregisterMBean(mbeanName);
        return super.shutdownNow();
    }

    @Override
    public int getQueueLength() {
        return getQueue().size();
    }

    protected void afterExecute(Runnable r, Throwable t) {
        super.afterExecute(r, t);
        if (t == null && r instanceof Future<?>) {
            try {
                ((Future<?>) r).get();
            } catch (CancellationException ce) {
                t = ce;
            } catch (ExecutionException ee) {
                t = ee.getCause();
            } catch (InterruptedException ie) {
                Thread.currentThread().interrupt();
            }
        }
        if (t != null) {
            logger.error("Exception in thread pool {}", mbeanName, t);
        }
    }
}
